| Titre : | Male sex bias in Eiders Somateria mollissima during spring migration into the Gulf of Finland |
| Auteurs : | M. Kilpi, Auteur ; M. Ost, Auteur ; A. Lehikoinen, Auteur ; A. Vattulainen, Auteur |
| Type de document : | Article |
| Dans : | Ornis Fennica (80(3) 2003) |
| Article en page(s) : | 137-142 |
| Langues: | Anglais |
| Résumé : | We recorded the sex ratio of adult Eiders migrating into the Gulf of Finland during spring (March-May) 2001 by visual observations at Hanko Bird Observatory, SW Finland. A total of 22 509 males and 17 234 females were sexed during migration, giving a highly significant departure from an even sex ratio (P |



